Julius uxgeb



(No Model.)

J. UNGER & S. 0. EISELB.

I ELECTRIC LAMP. No. 290,150. Patented Dec. 11, 1888.

WITNESSES I INVENTOR Juzz'us Zinger ,5; m M2 02? rise 28 @12 ,flw BY A, mflx d? ATTORNEYS that ran terns P TENT JULIUS UNGER, OF GANNSTADT, AND SAMUEL OTTO EISELE, OF HEUCIILIN- GEN, GERMANY; SAID EISELE ASSIGNOR TO SAID UXGER.

ELECTRIC LAMP.

SPECIFICATION forming part of Letters Patent No. 290,150, dated December 11, 1883/ Application filed June 26, 1853. (X0 model.) Patented in Belgium December 16, 1552, No. 50.57.).

To all whom it may concern:

Be it known that we, JULIUS UN GER, a citizen of the German Empire, residing at Oannstadt, Germany, and SAMUEL Orro Ersnmr, a citizen of the German Empire, residing at Heuehlingen, Germany, have invented new and useful Improvementsin Electric Lamps, of which the following is a specification.

This invention relates to improvements in electric lamps; and it consists in a verticallyadjustable elastic electrode-holder adapted to be turned or moved laterally, as hereinafter more fully set forth; also, in a clamping apparatus consisting of a supporting device providedwith clamping-arms. The illuminatingpower of the electric-light carbons is increased by suspending the same in a solution of zinc salts. A reservoir for the reception of fluid is also provided, as hereinafter set forth.

In the accompanying drawings, Figure 1 shows an elevation of a complete lamp, which is adapted for use as a stand-lamp, as well as a hanging lamp or wall-lamp, as shown by the bracket in dotted lines. The remaining fig ures will be hereinafter referred to.

Similar letters indicate corresponding parts.

The letter a indicates a brass tube, which is to be filled with a fluid, hereinafter more closely defined, in which is placed the float b, of a lighter specific gravity than the fluid. To the float b is attached a carbon rod, 0, which is thus raised by the fluid, and in being consumed is continually pressed against the upper electrode, (I, which is an iron cylinder. The carbon c is guided by the elastic or yielding clamping apparatus ff F F. The iron cylinder (Z is suspended from a thin but broad copper spring, 9, which with its lower bent end is screwed or attached to the iron cylinder (2. The spring 9 is soldered to the bent brass rod 71., and allows a rising or lifting of the iron cylinder (1 for the space of a few millimeters,

or a fractional part of an inch, whereby the latter is guided by the brass rod 72 The spring g thus effects a slight counter-pressure to the pressure of the float b. The brass rod his movable, its screw-thread running in a nut in the wooden ring i, so that by turning the said nut the guide-rod h is raised or lowered and the length of the incandescent carbon end regulated, and by turning the guide-rod h the carbon rod can be freed, and, when worn out, replaced by a new one.

The elastic clamping apparatus ff F F (shown in Fig. 2 on an enlarged scale) con sists of the massive copper arms f f, which lead the electric current to the carbon rod, and which are soldered to the broad thin brass rods F, which form part of the sleeve or cylindrical part F, and its downwardly-projecting clamps or spring-arms, which fits tightly over the brass tube'c, and the spring-arms of which sleeve F enable the latter to be firmly fixed at any position. The armsf f by the springs F are pressed gently against the carbon 0 and grasp or encircle the same while leaving it free to glide upward.

In order to be able to use carbon of varying diameters in one and the same lamp, a setscrew is provided for one of the springs F, by

which the pressure may be regulated. The surfaces of the arms f f which grasp or touch the carbon 0 are provided or faced with platinum plates.

Fig. 3 shows a plan view of the clamping apparatus just described in connection with Fig. 2. The wooden ring or slecvei is formed as shown in plan view in Fig. 4, the edge of the opening in the central portion of the sleeve 41 sitting upon the upper rim of the SlCQXB F of the spring-clamp, and a set-screw being provided to hold the ring 73 in position on the tube a. The elongations of the cut in the ring i serve to give play-room to the springsF when the carbon is changed.

Fig. 5 represents a side view in section of the capsule a, which rests with its edge on the upper rim of the tube a and prevents dust and strange matter fallinginto the same. The capsule has an opening, as seen in Fig. 5, through which the carbon passes out and is further guided.

To the under side of the dust-capsule n a sponge is to be attached, which bears against the carbon and which is intended to keep the surface of the carbon smooth.

At the lower part of the tube a the brass sleeve 7., provided with a clamping device, Z, is attached, which latter serves for the attachment of the wire for the entering of the cur- 2 aooarao rent. The current then takes the following course: Entering at Z, it flows along the tube a to the clamping device f f F F, thence to the carbon. From there the current flows through the iron cylinder (1, copper spring 9, and brass rod h, where it is led out of the lamp through the clamp on.

The fluid in the brass tube is such a one as is calculated to increase the illuminating-power of the carbon, which result maybeaccomplished by solutions of zinc saltsas, for example, by a solution of chloride of zinc in water. The carbon absorbs the fluid, and 011 the evaporation of the water the chloride of zinc remains in the pores of the carbon, which considerably increases the illuminating-power of the carbon and gives an agreeable color to the light.

What we claim as new, and desire to secure by Letters Patent, 1s

1. The combination, in an electric lamp, of a vertically-adj ustable rod, h, a spring, 9, having one end attached directly to the upper end of the rod, and an electrode, (Z, secured to the other end of the spring, substantially as described.

-2. The combination of a carbon, 0, suspended in a fluid of an electrode, (Z, a spring, 9, to which the electrode is secured, and a rod, 71, supporting the spring, said electrode being adapted to move laterally, substantially as described.

3. A clamping apparatus consisting of a supporting device, F F, provided with clamping-arms f f, substantially as and for the purpose set forth.

4. The method of increasing the illuminating-power of electric-light carbons by suspending the same in a solution of zinc salts, substantially as and for the purpose set forth.

5. The combination, in an electric lamp, of 40 a reservoir, a, containing a fluid, a float suspended in the fluid and carrying an absorbent, c, and a guide-cap, a, for guiding the absorbent, substantially as described.

6. The combination, in an electric lamp, of a reservoir containing a fluid, an absorbent suspended in the fluid, a cap for guiding the absorbent, and a yielding electrode suspended directly over the upper end of the absorbent and in contact therewith, substantially as described.

7. The combination, with the reservoir a, containing a solution of zinc, of the carbon electrode 0, having afloat, b, and the electrode d, substantially as described.

8. The combination, with the reservoir a, containing a solution of zinc, of the carbon 0, having a float, b, the vertically and laterally adjustable electrode (Z, and spring 9, substantially as described.

I11 testimony whereof we have hereunto set our hands and seals in the presence of two subscribing Witnesses.

J ULlUS UNGER.

lVitnesses:

TH. ABENHEIM, ROSINA SH'L'TDUL. 

